APA (7e ed.) Bronvermelding

Gude, K., & Kathy Gude. (2000). Advanced listening and speaking: CAE (New edition.). Oxford University Press.

Chicago (17e ed.) Bronvermelding

Gude, Kathy, en Kathy Gude. Advanced Listening and Speaking: CAE. New edition. Oxford: Oxford University Press, 2000.

MLA (8e ed.) Bronvermelding

Gude, Kathy, en Kathy Gude. Advanced Listening and Speaking: CAE. New edition. Oxford University Press, 2000.